Effect of Ergonomic Modification Training about Schoolbag on Reduction of Musculoskeletal Complaints in Primary School Students


Abstract

Introduction: Students spend about 6 hours a day. Ergonomic properties of school bag including bag weight, bag type, carrying method and bag size in relation to the students anthropometric dimensions are among the important causes of musculoskeletal pain and discomfort in students. In this study we assessed the effect of training on reduction of the symptoms and ergonomic correction of the school bag.
Methods: 109 students in the 6th grade entered the study. Musculoskeletal complaints, ergonomic properties of school bag, and its carrying method were assessed before and after a training intervention. P-values less than 0.05 considered significant. Data analysis was performed with SPSS software using Student T-test, Paired T test and chi square test for variables with normal distribution and Mann-Whitney U test and Kruskal Wallis test for variables without normal distribution. Kolmogorov-Smirnov test was used to test the normality of the variables.
Results: Bag weight was decreased significantly from 3.41 ± 0.48 kg before training to 2.60 ± 0.86 kg after training (P < 0.01). School bag carrying time was decreased significantly after training (P < 0.01). Frequency of using ergonomic bag was not significantly changed after intervention (P = 0.96).
Conclusions: Our training program about ergonomic modification of school bag was effective specially on the lowering the bag weight, but not on bag ergonomics; this reduction in the bag weight resulted in the reduction of the neck, shoulder, and back pain.

Keywords

School Bag; Musculoskeletal Diseases; Ergonomic Intervention; Training

Effect of Ergonomic Modification Training about Schoolbag on Reduction of Musculoskeletal Complaints in Primary School Students


Authors

Seyyed Jalil Mirmohammadi

Affiliation: Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

Mohammad Reza Nadri

Affiliation: Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

Amir Houshang Mehrparvar

Affiliation: Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

Mohammad Hossein Davari

Affiliation: Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

Mehrdad Mostaghaci

E-mail: mehrdadmostaghaci@gmail.com
Affiliation: Occupational and Environmental Medicine Specialist , Isfahan University of Medical Sciences, Isfahan, Iran

Effect of Ergonomic Modification Training about Schoolbag on Reduction of Musculoskeletal Complaints in Primary School Students


References

  1. Sanders M, Stricoff R. Ergonomics in the home. In: Sanders M, editor. Ergonomics and the management of musculoskeletal disorders. 2nd ed: Butterforth Hienemann; 2004. p. 399-400.
  2. Ramprasad M, Alias J, Raghuveer AK. Effect of backpack weight on postural angles in preadolescent children. Indian Pediatr. 2010;47(7):575-80. PMID: 20019396
  3. Devroey C, Jonkers I, de Becker A, Lenaerts G, Spaepen A. Evaluation of the effect of backpack load and position during standing and walking using biomechanical, physiological and subjective measures. Ergonomics. 2007;50(5):728-42. DOI: 10.1080/00140130701194850 PMID: 17454090
  4. Syazwan A, Azhar MM, Anita A, Azizan H, Shaharuddin M, Hanafiah JM, et al. Poor sitting posture and a heavy schoolbag as contributors to musculoskeletal pain in children: an ergonomic school education intervention program. J Pain Res. 2011;4:287-96. DOI: 10.2147/JPR.S22281 PMID: 22003301
  5. Dockrell S, Kane C, O’keefe E. Schoolbag weight and the effects of schoolbag carriage on secondary school students. Ergonomics. 2006;9:216-22.
  6. Montgomery L. Heavy Backpacks Can Cause Long-Term Health Problems When Worn Incorrectly. Available from: http://www.aota.org/News/Media/PR/2012-Press-Releases/Backpack-Awareness-Advisory.aspx.
  7. Whittfield J, Legg SJ, Hedderley DI. Schoolbag weight and musculoskeletal symptoms in New Zealand secondary schools. Appl Ergon. 2005;36(2):193-8. DOI: 10.1016/j.apergo.2004.10.004 PMID: 15694073
  8. Trevelyan FC, Legg SJ. Risk factors associated with back pain in New Zealand school children. Ergonomics. 2011;54(3):257-62. DOI: 10.1080/00140139.2010.547608 PMID: 21390955
  9. Ibrahim A. Incidence of Back Pain in Egyptian School Girls: Effect of School Bag Weight and Carrying Waylwl. World Appl Sci J. 2012;17(11):1526-34.
  10. Dianat I, Javadivala Z, Allahverdipour H. School Bag Weight and the Occurrence of Shoulder, Hand/Wrist and Low Back Symptoms among Iranian Elementary Schoolchildren. Health Promot Perspect. 2011;1(1):76-85. DOI: 10.5681/hpp.2011.008 PMID: 24688903
  11. Shams A, Holisaz M, Sobhani V, Khatibi E, Amanollahi A. The Frequency of Musculoskeletal Disorders in Students of Tehran, Tehran, Iran. Univ Med Sci J. 2012;2(6):31-6.
  12. Cofa D, Mehling W. Management of chronic pain. In: Ladou J, editor. Current Occupational & Environmental Medicine. 5th ed. USA: Mc Grow Hill; 2014.

Effect of Ergonomic Modification Training about Schoolbag on Reduction of Musculoskeletal Complaints in Primary School Students


Citation tools

Vancouver

Mirmohammadi S, Nadri M, Mehrparvar A, Davari M, Mostaghaci M. Effect of Ergonomic Modification Training about Schoolbag on Reduction of Musculoskeletal Complaints in Primary School Students. Focus on Sciences. 2016; 2(3):1-6


APA

Mirmohammadi, S., Nadri, M., Mehrparvar, A., Davari, M., & Mostaghaci, M. (2016). Effect of Ergonomic Modification Training about Schoolbag on Reduction of Musculoskeletal Complaints in Primary School Students. Focus on Sciences, 2(3), 1-6.


Chicago

Seyyed Jalil Mirmohammadi, Mohammad Reza Nadri, Amir Houshang Mehrparvar, Mohammad Hossein Davari, and Mehrdad Mostaghaci "Effect of Ergonomic Modification Training about Schoolbag on Reduction of Musculoskeletal Complaints in Primary School Students". Focus on Sciences 2, no. 3 (2016).

Effect of Ergonomic Modification Training about Schoolbag on Reduction of Musculoskeletal Complaints in Primary School Students


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